Katie St.Clair - CSCS, CPT on Instagram: "Upper cervical rotation is where true head and neck mobility begin. The atlas (C1) and axis (C2) form a unique joint complex that allows for nearly half of the total rotational capacity of your cervical spine. When this region moves well, it sets the foundation for reciprocal motion, the natural alternating pattern of movement that travels through the spine, ribcage, and pelvis. This coordination is what allows you to rotate your head while walking, main